Eroare de compilare: main.cpp: In function 'std::vector<edge> prim(std::map<int, std::vector<adj> >&, int, int)': main.cpp:51:25: warning: comparison of integer expressions of different signedness: 'std::vector<edge>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 51 | while(result.size() != n - 1) | ~~~~~~~~~~~~~~^~~~~~~~ In file included from /usr/include/c++/12.2.1/numeric:62, from main.cpp:5: /usr/include/c++/12.2.1/bits/stl_numeric.h: In instantiation of 'constexpr _Tp std::accumulate(_InputIterator, _InputIterator, _Tp, _BinaryOperation) [with _InputIterator = __gnu_cxx::__normal_iterator<edge*, vector<edge> >; _Tp = int; _BinaryOperation = main()::<lambda(int&, edge&)>]': main.cpp:106:23: required from here /usr/include/c++/12.2.1/bits/stl_numeric.h:169:29: error: no match for call to '(main()::<lambda(int&, edge&)>) (std::remove_reference<int&>::type, edge&)' 169 | __init = __binary_op(_GLIBCXX_MOVE_IF_20(__init), *__first); | ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /usr/include/c++/12.2.1/bits/stl_numeric.h:169:29: note: candidate: 'int (*)(int&, edge&)' (conversion) /usr/include/c++/12.2.1/bits/stl_numeric.h:169:29: note: conversion of argument 2 would be ill-formed: /usr/include/c++/12.2.1/bits/stl_numeric.h:169:29: error: cannot bind non-const lvalue reference of type 'int&' to an rvalue of type 'std::remove_reference<int&>::type' {aka 'int'} main.cpp:101:21: note: candidate: 'main()::<lambda(int&, edge&)>' (near match) 101 | auto add_edge = [](int& acc, edge& e) | ^ main.cpp:101:21: note: conversion of argument 1 would be ill-formed: /usr/include/c++/12.2.1/bits/stl_numeric.h:169:29: error: cannot bind non-const lvalue reference of type 'int&' to an rvalue of type 'std::remove_reference<int&>::type' {aka 'int'} 169 | __init = __binary_op(_GLIBCXX_MOVE_IF_20(__init), *__first); | ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Non zero exit status: 1